Dress is generally more casual in the United States then in other developed countries and further,dress is more casual on the West Coast then on the East Coast. Business dress remains typically conservative: suits for both men and women. CASUAL dress includes jeans and T-shirts, which have become ubiquitous all over the world. There are some regional differences in attire: What might be termed the traditional western costume---boots, blue jeans,work shirt, and cowboy hat --- is still worn by working men in many parts of the West.